baseline.out

goos: linux
goarch: amd64
pkg: crypto/cipher
BenchmarkAESGCMSeal1K-8   	20815730	       557 ns/op	1837.65 MB/s
BenchmarkAESGCMOpen1K-8   	22296660	       533 ns/op	1921.06 MB/s
BenchmarkAESGCMSign8K-8   	 5809227	      2065 ns/op	3968.00 MB/s
BenchmarkAESGCMSeal8K-8   	 3583026	      3364 ns/op	2434.99 MB/s
BenchmarkAESGCMOpen8K-8   	 3652791	      3291 ns/op	2488.84 MB/s
BenchmarkAESCTR1K-8       	 4263354	      2814 ns/op	 362.08 MB/s
BenchmarkAESCTR8K-8       	  547248	     21890 ns/op	 374.01 MB/s
PASS
ok  	crypto/cipher	96.571s

bench.sh

#!/bin/bash -ex

ref=$1

repo="https://go.googlesource.com/go"
bench8kcommit="4a0dad211c2158e8763c6fd230fbdc1c7d566cb9"
benchtime="10s"
cwd=$(pwd)

# clone in temp dir
workdir=$(mktemp -d)
cd ${workdir}
git clone "${repo}"
cd go

# fetch cl reference
git fetch ${repo} ${ref}
git checkout FETCH_HEAD

# cherry pick the 8K benchmark
git cherry-pick --keep-redundant-commits ${bench8kcommit}

# make
cd src
./make.bash
cd ..

# test
./bin/go test crypto/aes crypto/cipher

# benchmark
output=${cwd}/${ref//\//_}_${benchtime}.out
./bin/go test -run NONE -bench '(CTR|GCM)' -benchtime ${benchtime} crypto/cipher | tee ${output}

# clean
cd ${cwd}
rm -rf ${workdir}

cmp.out

benchmark                   old ns/op     new ns/op     delta
BenchmarkAESGCMSeal1K-8     556           558           +0.36%
BenchmarkAESGCMOpen1K-8     530           534           +0.75%
BenchmarkAESGCMSign8K-8     2049          2045          -0.20%
BenchmarkAESGCMSeal8K-8     3366          3362          -0.12%
BenchmarkAESGCMOpen8K-8     3284          3289          +0.15%
BenchmarkAESCTR1K-8         671           376           -43.96%
BenchmarkAESCTR8K-8         4826          2294          -52.47%

benchmark                   old MB/s     new MB/s     speedup
BenchmarkAESGCMSeal1K-8     1840.43      1834.91      1.00x
BenchmarkAESGCMOpen1K-8     1929.99      1917.47      0.99x
BenchmarkAESGCMSign8K-8     3997.98      4005.84      1.00x
BenchmarkAESGCMSeal8K-8     2433.57      2436.21      1.00x
BenchmarkAESGCMOpen8K-8     2494.19      2490.21      1.00x
BenchmarkAESCTR1K-8         1516.47      2704.17      1.78x
BenchmarkAESCTR8K-8         1696.40      3568.81      2.10x

cmp.sh

#!/bin/bash -ex

sudo ./prepare.sh
./bench.sh refs/changes/70/51670/4
./bench.sh refs/changes/96/136896/2
sudo ./reset.sh
benchcmp refs_changes_*.out > cmp.out

prepare.sh

#!/bin/bash -ex

echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo

for cpu in /sys/devices/system/cpu/cpu[0-9]; do
    echo performance > ${cpu}/cpufreq/scaling_governor
done

refs_changes_70_51670_4_10s.out

goos: linux
goarch: amd64
pkg: crypto/cipher
BenchmarkAESGCMSeal1K-8   	30000000	       556 ns/op	1840.43 MB/s
BenchmarkAESGCMOpen1K-8   	30000000	       530 ns/op	1929.99 MB/s
BenchmarkAESGCMSign8K-8   	10000000	      2049 ns/op	3997.98 MB/s
BenchmarkAESGCMSeal8K-8   	 5000000	      3366 ns/op	2433.57 MB/s
BenchmarkAESGCMOpen8K-8   	 5000000	      3284 ns/op	2494.19 MB/s
BenchmarkAESCTR1K-8       	20000000	       671 ns/op	1516.47 MB/s
BenchmarkAESCTR8K-8       	 3000000	      4826 ns/op	1696.40 MB/s
PASS
ok  	crypto/cipher	129.776s

refs_changes_96_136896_2_10s.out

goos: linux
goarch: amd64
pkg: crypto/cipher
BenchmarkAESGCMSeal1K-8   	30000000	       558 ns/op	1834.91 MB/s
BenchmarkAESGCMOpen1K-8   	30000000	       534 ns/op	1917.47 MB/s
BenchmarkAESGCMSign8K-8   	10000000	      2045 ns/op	4005.84 MB/s
BenchmarkAESGCMSeal8K-8   	 5000000	      3362 ns/op	2436.21 MB/s
BenchmarkAESGCMOpen8K-8   	 5000000	      3289 ns/op	2490.21 MB/s
BenchmarkAESCTR1K-8       	50000000	       376 ns/op	2704.17 MB/s
BenchmarkAESCTR8K-8       	10000000	      2294 ns/op	3568.81 MB/s
PASS
ok  	crypto/cipher	140.878s

reset.sh

#!/bin/bash -ex

echo 0 > /sys/devices/system/cpu/intel_pstate/no_turbo

for cpu in /sys/devices/system/cpu/cpu[0-9]; do
    echo powersave > ${cpu}/cpufreq/scaling_governor
done